Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5285813 | Pressure limiting valve with stable spring pad | Norbert Quante | 1994-02-15 |
| 5240354 | Flexible telescopic prop for building materials | — | 1993-08-31 |
| D312977 | Traffic guide post | — | 1990-12-18 |
| 4934097 | Barrier post free of jamming points | — | 1990-06-19 |
| 4713910 | Barrier post for parking lots and passageways | — | 1987-12-22 |
| 4432954 | Production of gypsum hemihydrate with waste heat, aqueous H.sub.2 SO.sub.4 and sulfuric acid salts | — | 1984-02-21 |